/*
	Copyright 2008, 2009, 2010 Brightworks, Inc.
	
	This file is part of Language Mentor.
	
	Language Mentor is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	
	Language Mentor is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with Language Mentor.  If not, see <http://www.gnu.org/licenses/>.
*/
package com.langcollab.languagementor.controller.audio
{
    import flash.events.Event;
    import flash.events.TimerEvent;
    import flash.utils.Timer;

    public class AudioSequenceLeaf_Silence extends AudioSequenceLeaf
    {
        public var duration:int;

        private var _timer:Timer;

        public function AudioSequenceLeaf_Silence()
        {
            super();
        }

        // ****************************************************
        //
        //          Public Methods
        //
        // ****************************************************

        public override function dispose():void
        {
            _timer.removeEventListener(TimerEvent.TIMER_COMPLETE, onElementComplete);
            _timer = null;
        }

        public override function start():void
        {
            super.start();
            _timer = new Timer(duration, 1);
            _timer.addEventListener(TimerEvent.TIMER_COMPLETE, onElementComplete);
            _timer.start();
        }

        public override function stop():void
        {
            super.stop();
            _timer.stop();
            _timer.removeEventListener(TimerEvent.TIMER_COMPLETE, onElementComplete);
            _timer = null;
        }

        // ****************************************************
        //
        //          Protected Methods
        //
        // ****************************************************

        protected override function onElementComplete(event:Event):void
        {
            _timer.removeEventListener(TimerEvent.TIMER_COMPLETE, onElementComplete);
            _timer = null;
            super.onElementComplete(event);
        }
    }
}